Letraset Autumn/Winter ProMarker with Blender Set Letterset ProMarker, a high quality, twin-tipped marker that combines an unbeatable color performance with outstanding value The alcohol-based, non-toxic, pigmented ink is made with professional quality dyes for a smooth, streak-free finish Letraset markers such as Flex Marker and water-based Aqua Marker, Metallic Marker and Neon Marker ranges